If you are asking if your Stanley remote would be compatible w/ the new
receiver(s) that was recommended the answer would be no. Therefore you
would need a set w/ receiver & remote & also a power transformer (may
need to purchase separately).

The drive is not shot yet, but you may be able to save it for a while
longer. The reason most of these break is because the two screws that
hold the motor to the housing loosen up causing the motor to jump. If
the screws loosen enough or fall out it will usually break one end of
the cover (and sometimes the gear body) completely off. If you plan on
keeping the opener tighten the motor screws & put nuts on the end of
the screws on top of the motor head to keep them tight.

Obviously only you can decide whether to put money into a 20 year old
operator that none of the motor head parts (except for the motor
capacitor) or circuit boards are available, but at least now you are
making a more informed decision then what I believe you were before.
Doordoc